Rear Blend Pot Circuit Shorted (Active)

Test 1 - 2:

Test 3 - 6:

SYMPTOM
REAR BLEND POT CIRCUIT SHORT (ACTIVE) - MTC

WHEN MONITORED
When the ignition is on.

SET CONDITION
This DTC will set if the A/C - Heater Control Module sees voltage below 0.25 volts on the Rear Temperature Feedback Signal circuit.

POSSIBLE CAUSES
- 5 volt supply circuit shorted to ground
- 5 volt supply circuit open
- 5 volt supply circuit shorted to rear temperature return circuit
- Rear temperature feedback signal circuit shorted to ground
- Rear temperature feedback signal CKT shorted to rear temperature return CKT
- Rear blend potentiometer shorted
- A/C - heater control module